CN106838622A - A kind of flare gas recovery system - Google Patents
A kind of flare gas recovery system Download PDFInfo
- Publication number
- CN106838622A CN106838622A CN201710223936.4A CN201710223936A CN106838622A CN 106838622 A CN106838622 A CN 106838622A CN 201710223936 A CN201710223936 A CN 201710223936A CN 106838622 A CN106838622 A CN 106838622A
- Authority
- CN
- China
- Prior art keywords
- gas
- air accumulator
- pressure
- compressor
- surge tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pipeline Systems (AREA)
Abstract
Flare gas recovery system disclosed by the invention includes the surge tank for being connected on main gas line successively（2）, prime compressor（3）, air accumulator（4）, rear class compressor（5）And DCS system, after setting pressure is reached into the torch gas in surge tank from main gas line, enter air accumulator after being pressurizeed through prime compressor, condensation recovery is carried out to it by the cooling coil in air accumulator, the liquid condensation fluid position in air accumulator controls fluid level transmitter by DCS system（L1）, Liquid level valve be controlled, the pressure in air accumulator by DCS system control second gas pressure transmitter（P2）, prime compressor, rear class compressor, the control of first gas control valve, second gas control valve be controlled, the low-pressure flare gas of air accumulator pressurize by rear class compressor, are sent to stripping recovery system and are recycled.Simple structure of the present invention, floor space are small, and low cost, more efficient energy-saving, are particularly well-suited to the less engineering in space.
Description
Technical field
The invention belongs to oil plant flare gas recovery system technical field, and in particular to a kind of flare gas recovery system.
Background technology
At present, in oil refining industry, tail gas regulations of refining all to oil plant have to recycle, it is therefore an objective to play section
Can be with the effect of pollution abatement environment.Existing recovery method mostly be using dry type compressor by torch gas from atmospheric compression to
0.7~1MPa feeding gas-holders are recycled, and are generally had that consumption of lubricating oil is big, operating cost is high, fault rate is high etc. and are asked
Topic.
" a kind of torch gas suction compressor train " disclosed in Chinese patent literature（Patent No.
201420246630.2）, although preferably solve above mentioned problem；But the system is due to comprising gas-liquid separator, be applied to it is small
Implementation not easy to install and effective energy-conservation during type engineering.
The content of the invention
The present invention in view of the shortcomings of the prior art, proposes a kind of flare gas recovery system.The recovery system not only structure letter
Single, floor space is small, and energy-saving effect is more efficient.
The present invention realizes that above-mentioned purpose is adopted the technical scheme that：A kind of flare gas recovery system, including successively in main gas
Surge tank, prime compressor, air accumulator, rear class compressor and the DCS system connected on body pipeline, enter slow from main gas line
After the torch gas rushed in tank reach setting pressure, enter air accumulator after being pressurizeed through prime compressor, by the cooler pan in air accumulator
Managing it carries out condensation recovery, and the liquid condensation fluid position in air accumulator is by DCS system control fluid level transmitter L1, fluid level control valve
Door is controlled, and the pressure in air accumulator 4 is by DCS system control second gas pressure transmitter P2, prime compressor, rear class pressure
Contracting machine, the control of first gas control valve, second gas control valve are controlled, and the low-pressure flare gas of air accumulator are by rear class
Compressor pressurizes, and is sent to stripping recovery system and is recycled.
The present invention sets first gas pressure transmitter on the surge tank, and pressure release is set in the upper end of the surge tank
Pipeline, sets second gas pressure transmitter, the main gas between the surge tank and prime compressor on the air accumulator
First gas control valve is set on body pipeline, the is set on the main gas line between the air accumulator and rear class compressor
Two gas control valves.
Torch gas pressure set points in surge tank of the present invention are 0.2MPa-0.3MPa.
Torch atmospheric pressure in air accumulator of the present invention is 0.3~0.6MPa.
Low-pressure flare gas in air accumulator of the present invention are pressurized to 0.6~1.2MPa and are sent to stripping time by rear class compressor
Receipts system is recycled.
Fluid level transmitter of the present invention is magnetic double level gauge or double flange liquid level transmission devices
The present invention using middle air accumulator by instead of traditional gas-liquid separator and heat exchanger, substantially reducing normal pressure buffering
The volume of tank, simple structure, floor space are small, and low cost, more efficient energy-saving, are particularly well-suited to the less work in space
Journey.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
In figure：1st, main gas line, 2, surge tank, 3, prime compressor, 4, air accumulator, 5, rear class compressor, 6, pressure release
Pipeline, 7, first gas control valve, 8, second gas control valve, 9, cooling coil, 10, cold oil discharge line, 11, liquid
Level control valve door, 12, third gas control valve, 13, stripping recovery system, 14, low pressure flare system, P1, first gas pressure
Power transmitter, P2, second gas pressure transmitter, L1 fluid level transmitters.
Specific embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
As shown in Figure 1：Flare gas recovery system described in the present embodiment includes being set in sequence in slow on main gas line 1
Tank 2, prime compressor 3, air accumulator 4 and rear class compressor 5 are rushed, described surge tank 2 is closed pressurized tank, and effect is to refining
The refined tail gas of oily factory is collected and stores, and first gas pressure transmitter P1 and pressure relief pipe 6, the relief tube are set thereon
The port of export on road 6 carries out pipeline and is connected with the low pressure flare system 14 in flare system, and effect is to prevent inlet pressure superpressure,
Third gas control valve 12 is also associated with pressure relief pipe 6, the third gas control valve 12 is connected with DCS system.
Described air accumulator 4 is stored using low pressure, the appearance of the volume compared to the normal pressure surge tank in traditional handicraft of air accumulator 4
Product is substantially reduced, and reduces equipment investment.Second gas pressure transmitter P2 is connected with air accumulator 4, the second gas pressure
Transmitter P2 is communicated to connect with DCS system.Prime compression is connected with main gas line 1 between air accumulator 4 and surge tank 2
Machine 3, effect is the tail gas suction pressurization that storage will be collected in surge tank 2, and is delivered in the air accumulator 4 of elevated pressures and is added
Pressure storage and condensation are reclaimed, and first gas control is connected with the main gas line 1 between surge tank 2 and prime compressor 3
Valve 7, effect is gas backflow when preventing prime compressor 3 from shutting down；Main gas between air accumulator 4 and stripping recovery system
Rear class compressor 5 is connected with pipeline 1, effect is that the tail gas for collecting storage in air accumulator 4 is aspirated pressurized delivered to stripping to return
Receipts system 13, second gas control valve 8 is connected with the main gas line 1 between air accumulator 4 and rear class compressor 5, is made
Be prevent rear class compressor 5 shut down when gas backflow；Cold oil discharge line 10 is connected with the lower end of air accumulator 4, cold
Liquid level valve 11, described first gas control valve 7, second gas control valve are connected with solidifying oil discharge line 10
8 communicate to connect with DCS system.Cooling coil 9 is built-in with described air accumulator 4, the low-pressure flare gas of high temperature is carried out cold
Solidifying to reclaim, wherein the coagulated oil gas condensation in torch gas gets off to collect to the bottom of air accumulator 4, uncooled low temperature on-condensible gas
It is summarised in the top of air accumulator 4；The side of air accumulator 4 is provided with fluid level transmitter L1, fluid level transmitter L1 can be used
Magnetic double level gauge, liquid level is measured by the movement of magnetic float, it would however also be possible to employ double flange liquid level transmission devices, by pressure difference come
Measurement liquid level.Fluid level transmitter L1, Liquid level valve 11 are communicated to connect with DCS system, and DCS system passes through fluid level transmitter
The position of L1 and Liquid level valve 11 by the working solution Liquid level in air accumulator 4 below horizontal center line.
The course of work of flare gas recovery system of the invention is as follows：
The first step, low pressure storage.The torch gas of the normal temperature and pressure of each system station enter surge tank 2 from main gas line 1 first
Stored, be then forced into 0.3~0.6MPa by prime compressor 3, the torch gas after pressurization are deposited into air accumulator 4
Storage, while the cooling coil 9 in air accumulator 4 carries out condensation recovery to the torch gas of high-temperature low-pressure.When the liquid in air accumulator 4 is cold
When solidifying fluid position is increased to horizontal centre line position, fluid level transmitter L1 transmits signal to DCS system, and DCS system makes cold oil
Liquid level valve 11 on discharge line is opened and carries out discharge opeing, until liquid level drops to the lower position of setting liquid level；Work as storage
When pressure in gas tank 4 reaches 0.6MPa, the second gas pressure transmitter P2 on air accumulator 4 transmits signal to DCS system,
DCS system makes prime compressor 3 shut down, and the first gas control valve 7 simultaneously closed off on main gas line 1 prevents from backflowing.
Second step, high-pressure delivery.The low-pressure flare gas of air accumulator 4 further pressurize by rear class compressor 5, when pressure reaches
To after 0.6~1.2MPa, it is sent to stripping recovery system and is recycled；When rear class compressor 5 is operated, in air accumulator 4
Torch atmospheric pressure can be reduced, and when the torch atmospheric pressure in air accumulator is less than 0.3MPa, the second gas pressure on air accumulator 4 becomes
Device P2 is sent to transmit signal to DCS system, DCS system makes prime compressor 3 restart and open first gas control valve 7
Row low pressure is stored, while cutting off rear class compressor 5 to prevent from superpressure, and close second gas control valve 8 to prevent from backflowing；Work as storage
When pressure in gas tank reaches 0.6MPa again, the second gas pressure transmitter P2 on air accumulator 4 transmits signal to DCS systems
System, DCS system shuts down prime compressor 3 to prevent superpressure, and closes first gas control valve 7 to prevent from backflowing, while
Start rear class compressor 5 and open second gas control valve 8 and re-start high-pressure delivery.
This recovery system constantly repeats the above steps circular flow；When air supply system comes that tolerance is less, prime compressor 3
When inlet pressure is less than setting normal pressure value 0.1MPa, the first gas pressure transmitter P1 on surge tank 2 transmits signal to DCS systems
System, DCS system makes prime compressor 3 shut down, simultaneously closes off first gas control valve 7, until the torch air pressure in surge tank 2
Power reaches normal pressure, and being then turned on prime compressor 3 and first gas control valve 7 carries out low pressure storage.
When air supply system, to carry out tolerance larger, when torch atmospheric pressure is higher than setting value 0.2MPa in surge tank 2, on surge tank 2
First gas pressure transmitter P1 transmission signals to DCS system, DCS system startup big flow operation program, prime compressor 3
With the no longer interval partition running of rear class compressor 5, but run simultaneously to increase the rate of air sucked in required of whole recovery system, now first
Gas control valve 7 and second gas control valve 8 are also opened simultaneously.When torch atmospheric pressure continues to raise in surge tank 2, it is higher than
During setting upper limit 0.3MPa, the first gas pressure transmitter P1 on surge tank 2 transmits signal to DCS system, and DCS system makes to let out
Third gas control valve 12 on pressure pipe road 6 is opened and carries out pressure release, and unnecessary torch gas are discharged into flare system is burnt；
When the torch gas pressure in surge tank 2 drops to normal pressure, first gas pressure transmitter P1 transmits signal to DCS system, DCS systems
System closes the third gas control valve 12 on pressure relief pipe 6, while between startup normal procedure is segmented front stage compressor
Have a rest operation.
DCS system of the present invention is the abbreviation of Distributed Control System.It is concentrated using control dispersion, operation and management
Fundamental design idea, using the autonomous structure type of multi-layer classification, cooperation.Current DCS is in each row such as electric power, metallurgy, petrochemical industry
Each industry is all extremely widely applied.
Although embodiment has been described in detail to the present invention, it will be understood by those within the art that, still
Technical scheme can be modified and equivalent, it all should cover works as in scope of the presently claimed invention
In.
Claims (6)
1. a kind of flare gas recovery system, including main gas line（1）, it is characterized in that：In described main gas line（1）On according to
It is secondary to be connected with surge tank（2）, prime compressor（3）, air accumulator（4）, rear class compressor（5）And DCS system, from main gas line
After reaching setting pressure into the torch gas in surge tank, enter air accumulator after being pressurizeed through prime compressor, by air accumulator
Cooling coil（9）It carries out condensation recovery, the air accumulator（4）In liquid condensation fluid position by DCS system control liquid level become
Send device（L1）, Liquid level valve（11）It is controlled, the air accumulator（4）In the second gas for being controlled by DCS system of pressure
Body pressure transmitter（P2）, prime compressor（3）, rear class compressor（5）, first gas control valve（7）Control, second gas
Control valve（8）It is controlled, the air accumulator（4）Low-pressure flare gas by rear class compressor（5）Pressurization, is sent to stripping and returns
Receipts system（13）Recycled.
2. flare gas recovery system according to claim 1, it is characterized in that：In the surge tank（2）The first gas of upper setting
Body pressure transmitter（P1）, in the surge tank（2）Upper end set pressure relief pipe（6）, in the air accumulator（4）It is upper to set the
Two gas pressure transmitters（P2）, in the surge tank（2）With prime compressor（3）Between main gas line（1）Upper setting
First gas control valve（7）, in the air accumulator（4）With rear class compressor（5）Between main gas line（1）It is upper to set the
Two gas control valves（8）.
3. flare gas recovery system according to claim 1, it is characterized in that：The surge tank（2）In torch atmospheric pressure
Setting value is 0.2MPa-0.3MPa.
4. flare gas recovery system according to claim 1, it is characterized in that：Torch atmospheric pressure in the air accumulator 4 is
0.3~0.6MPa.
5. flare gas recovery system according to claim 1, it is characterized in that：Low-pressure flare gas in the air accumulator 4 by
Rear class compressor 5 is pressurized to 0.6~1.2MPa and is sent to stripping recovery system（13）Recycled.
6. flare gas recovery system according to claim 1, it is characterized in that：The fluid level transmitter（L1）It is magnetic turnover panel liquid
Position meter or double flange liquid level transmission devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710223936.4A CN106838622A (en) | 2017-04-07 | 2017-04-07 | A kind of flare gas recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710223936.4A CN106838622A (en) | 2017-04-07 | 2017-04-07 | A kind of flare gas recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106838622A true CN106838622A (en) | 2017-06-13 |
Family
ID=59147208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710223936.4A Pending CN106838622A (en) | 2017-04-07 | 2017-04-07 | A kind of flare gas recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106838622A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319350A (en) * | 2019-07-15 | 2019-10-11 | 西南石油大学 | A kind of recovery process that gas phase ethane pipeline is dropped a hint and device |
| CN113324256A (en) * | 2020-06-11 | 2021-08-31 | 中国海洋石油集团有限公司 | Flare gas recovery system for offshore oil production platform |
| CN114394570A (en) * | 2022-02-14 | 2022-04-26 | 连云港石化有限公司 | Difficult-to-volatilize chemical liquid conveying system and automatic control method |
| CN115046214A (en) * | 2022-06-09 | 2022-09-13 | 中海石油（中国）有限公司天津分公司 | Automatic air collection and supply control device applied to torch system and control method thereof |
| CN115971504A (en) * | 2022-02-08 | 2023-04-18 | 河南能微新材料科技有限公司 | Preparation control method of micro-spheroidized powder or nano-powder |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2546723Y (en) * | 2002-05-10 | 2003-04-23 | 王达胜 | Middle and low-pressure natural gas absorbent gas tank |
| WO2004073839A1 (en) * | 2003-02-19 | 2004-09-02 | Garo Dr. Ing. Roberto Gabbioneta S.P.A. | Process and equipment for treating refinary gases containing hydrogen sulphide |
| CN201348134Y (en) * | 2008-12-30 | 2009-11-18 | 上海雷格仪器有限公司 | SF6 liquid storage device with cooling function |
| CN104019358A (en) * | 2014-05-14 | 2014-09-03 | 广东省佛山水泵厂有限公司 | Flare gas suction compressor series system |
| CN204879428U (en) * | 2015-08-21 | 2015-12-16 | 安姆达清洁能源技术（苏州）有限公司 | Import buffer tank and natural gas compressor of retrieving jar with integrate |
| WO2016058042A1 (en) * | 2014-10-14 | 2016-04-21 | Mosaic Technology Development Pty Ltd | System and method for refuelling a compressed gas pressure vessel using a cooling circuit and in-vessel temperature stratification |
| CN106122755A (en) * | 2016-08-22 | 2016-11-16 | 科威嘉粉末涂料（天津）股份有限公司 | A kind of possess the compressed air reservoir except water function |
-
2017
- 2017-04-07 CN CN201710223936.4A patent/CN106838622A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2546723Y (en) * | 2002-05-10 | 2003-04-23 | 王达胜 | Middle and low-pressure natural gas absorbent gas tank |
| WO2004073839A1 (en) * | 2003-02-19 | 2004-09-02 | Garo Dr. Ing. Roberto Gabbioneta S.P.A. | Process and equipment for treating refinary gases containing hydrogen sulphide |
| CN201348134Y (en) * | 2008-12-30 | 2009-11-18 | 上海雷格仪器有限公司 | SF6 liquid storage device with cooling function |
| CN104019358A (en) * | 2014-05-14 | 2014-09-03 | 广东省佛山水泵厂有限公司 | Flare gas suction compressor series system |
| WO2016058042A1 (en) * | 2014-10-14 | 2016-04-21 | Mosaic Technology Development Pty Ltd | System and method for refuelling a compressed gas pressure vessel using a cooling circuit and in-vessel temperature stratification |
| CN204879428U (en) * | 2015-08-21 | 2015-12-16 | 安姆达清洁能源技术（苏州）有限公司 | Import buffer tank and natural gas compressor of retrieving jar with integrate |
| CN106122755A (en) * | 2016-08-22 | 2016-11-16 | 科威嘉粉末涂料（天津）股份有限公司 | A kind of possess the compressed air reservoir except water function |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319350A (en) * | 2019-07-15 | 2019-10-11 | 西南石油大学 | A kind of recovery process that gas phase ethane pipeline is dropped a hint and device |
| CN110319350B (en) * | 2019-07-15 | 2021-04-13 | 西南石油大学 | Recovery process and device for gas-phase ethane pipeline vent gas |
| CN113324256A (en) * | 2020-06-11 | 2021-08-31 | 中国海洋石油集团有限公司 | Flare gas recovery system for offshore oil production platform |
| CN115971504A (en) * | 2022-02-08 | 2023-04-18 | 河南能微新材料科技有限公司 | Preparation control method of micro-spheroidized powder or nano-powder |
| CN115971504B (en) * | 2022-02-08 | 2023-11-21 | 河南能微新材料科技有限公司 | Method for controlling preparation of micron spheroidized powder or nano powder |
| CN114394570A (en) * | 2022-02-14 | 2022-04-26 | 连云港石化有限公司 | Difficult-to-volatilize chemical liquid conveying system and automatic control method |
| CN115046214A (en) * | 2022-06-09 | 2022-09-13 | 中海石油（中国）有限公司天津分公司 | Automatic air collection and supply control device applied to torch system and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106838622A (en) | A kind of flare gas recovery system | |
| CN210532742U (en) | Refrigerating system with oil return and oil discharge functions | |
| CN204767789U (en) | Vacuum centrifugation oil filter | |
| CN212031995U (en) | Flash evaporation gas recovery integrated device | |
| CN202832456U (en) | Pressure reduction and yield increase device for natural gas well mouth | |
| CN209129958U (en) | It is a kind of for driving the hydraulic system of super high-pressure hydrogen compressor | |
| CN208830973U (en) | Casing coalbed methane recovery device | |
| CN203321839U (en) | High-speed drainage turbine synchronous discharging and suction pump with vacuum-keeping function | |
| CN214892690U (en) | Flash steam recovery system for refinery | |
| CN113847247B (en) | Spray cooling-assisted oilfield associated gas recovery liquid ring compressor system and method | |
| CN201802626U (en) | Oil supply system of screw compressor | |
| CN111765378B (en) | Integrated oil-gas heating transfer device and method | |
| CN210622776U (en) | Casing gas recovery and crude oil extraction driving yield increasing and energy saving device | |
| CN110725667B (en) | LNG well-flushing paraffin removal vehicle | |
| CN207554026U (en) | Natural gas well well head defoaming automatic filling sled | |
| CN208397667U (en) | A kind of lubricating oil station applied to bulb-type hydraulic generating set jacked up with high pressure | |
| CN208106400U (en) | A kind of automatic pollution discharge separation sled for supercharging equipment front end | |
| CN207050496U (en) | A kind of thermal power plant vacuumizes ammoniacal liquor recovery system | |
| CN112344757A (en) | Power plant condenser evacuation prevent ponding device | |
| CN202182011U (en) | High-pressure air source generating device | |
| CN112303769A (en) | LNG cold energy recycling and storing device | |
| CN207195147U (en) | Gas-pressed equipment | |
| CN201137921Y (en) | Hermetic type high-temperature condensation water and water collecting tank steam reclaiming and conveyer device | |
| CN206207800U (en) | A kind of flooded evaporator return-oil system and use its Water-cooling type air conditioner unit | |
| CN216812063U (en) | Vacuum maintaining device of industrial cleaning machine system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170613 |